[MS] Mangle a hash of the main file path into anonymous namespaces

Summary:
This is needed to avoid conflicts in mangled names for codeview types in
anonymous namespaces. In CodeView, types refer to each other typically
through forward declarations, which contain mangled names. These names
have to be unique, otherwise the debugger will look up the mangled name
and find the wrong definition.

Furthermore, ThinLTO will deduplicate the types, and debug info
verification can fail when the types have the wrong sizes. This is
PR38608.

Fixes PR38609.

Reviewers: majnemer, inglorion, hans

Subscribers: mehdi_amini, aprantl, JDevlieghere, dexonsmith, cfe-commits

Differential Revision: https://reviews.llvm.org/D50877

llvm-svn: 340079

13 files changed, 30 insertions, 30 deletions

diff --git a/clang/test/CodeGenCXX/cfi-cross-dso.cpp b/clang/test/CodeGenCXX/cfi-cross-dso.cpp
index 6d5e0591191..4b7b3d70f09 100644
--- a/clang/test/CodeGenCXX/cfi-cross-dso.cpp
+++ b/clang/test/CodeGenCXX/cfi-cross-dso.cpp
@@ -26,7 +26,7 @@ void g() {
   b.f();
 }
 
-// MS: @[[B_VTABLE:.*]] = private unnamed_addr constant { [2 x i8*] } {{.*}}@"??_R4B@?A@@6B@"{{.*}}@"?f@B@?A@@UEAAXXZ"
+// MS: @[[B_VTABLE:.*]] = private unnamed_addr constant { [2 x i8*] } {{.*}}@"??_R4B@?A0x{{[^@]*}}@@6B@"{{.*}}@"?f@B@?A0x{{[^@]*}}@@UEAAXXZ"
 
 // CHECK:   %[[VT:.*]] = load void (%struct.A*)**, void (%struct.A*)***
 // CHECK:   %[[VT2:.*]] = bitcast {{.*}}%[[VT]] to i8*, !nosanitize
diff --git a/clang/test/CodeGenCXX/cfi-icall.cpp b/clang/test/CodeGenCXX/cfi-icall.cpp
index e53aeefd8a9..00c9f59700a 100644
--- a/clang/test/CodeGenCXX/cfi-icall.cpp
+++ b/clang/test/CodeGenCXX/cfi-icall.cpp
@@ -21,7 +21,7 @@ void g() {
 }
 
 // ITANIUM: define internal void @_ZN12_GLOBAL__N_11fENS_1SE({{.*}} !type [[TS1:![0-9]+]] !type [[TS2:![0-9]+]]
-// MS: define internal void @"?f@?A@@YAXUS@?A@@@Z"({{.*}} !type [[TS1:![0-9]+]] !type [[TS2:![0-9]+]]
+// MS: define internal void @"?f@?A0x{{[^@]*}}@@YAXUS@?A0x{{[^@]*}}@@@Z"({{.*}} !type [[TS1:![0-9]+]] !type [[TS2:![0-9]+]]
 
 // CHECK: [[VOIDS1]] = distinct !{}
 // CHECK: [[TS1]] = !{i64 0, [[VOIDS1]]}
diff --git a/clang/test/CodeGenCXX/debug-info-thunk.cpp b/clang/test/CodeGenCXX/debug-info-thunk.cpp
index 56dec93f6b3..27bbbc68327 100644
--- a/clang/test/CodeGenCXX/debug-info-thunk.cpp
+++ b/clang/test/CodeGenCXX/debug-info-thunk.cpp
@@ -86,7 +86,7 @@ namespace Test4 {
     };
   }
   void C::c() {}
-// CHECK-DAG: DISubprogram{{.*}}linkageName: "?f@C@?A@Test4@@W7EAAXXZ"{{.*}} flags: {{.*}}DIFlagThunk
+// CHECK-DAG: DISubprogram{{.*}}linkageName: "?f@C@?A0x{{[^@]*}}@Test4@@W7EAAXXZ"{{.*}} flags: {{.*}}DIFlagThunk
   void C::f() {}
 
   // Force C::f to be used.
diff --git a/clang/test/CodeGenCXX/dllexport.cpp b/clang/test/CodeGenCXX/dllexport.cpp
index a7b6aad357e..5e4aa013b3c 100644
--- a/clang/test/CodeGenCXX/dllexport.cpp
+++ b/clang/test/CodeGenCXX/dllexport.cpp
@@ -797,7 +797,7 @@ struct __declspec(dllexport) PR23308 {
 };
 void PR23308::f(InternalLinkageType*) {}
 long use(PR23308* p) { p->f(nullptr); }
-// M32-DAG: define internal x86_thiscallcc void @"?f@PR23308@@QAEXPAUInternalLinkageType@?A@@@Z"
+// M32-DAG: define internal x86_thiscallcc void @"?f@PR23308@@QAEXPAUInternalLinkageType@?A0x{{[^@]*}}@@@Z"
 
 template <typename T> struct PR23770BaseTemplate { void f() {} };
 template <typename T> struct PR23770DerivedTemplate : PR23770BaseTemplate<int> {};
diff --git a/clang/test/CodeGenCXX/mangle-ms.cpp b/clang/test/CodeGenCXX/mangle-ms.cpp
index 3cc1b1645e9..e128c944315 100644
--- a/clang/test/CodeGenCXX/mangle-ms.cpp
+++ b/clang/test/CodeGenCXX/mangle-ms.cpp
@@ -15,7 +15,7 @@ namespace N {
 
   namespace {
     int anonymous;
-// CHECK-DAG: @"?anonymous@?A@N@@3HA"
+// CHECK-DAG: @"?anonymous@?A0x{{[^@]*}}@N@@3HA"
   }
 }
 
diff --git a/clang/test/CodeGenCXX/microsoft-abi-structors.cpp b/clang/test/CodeGenCXX/microsoft-abi-structors.cpp
index 97b90ce6b9e..b0d2b565403 100644
--- a/clang/test/CodeGenCXX/microsoft-abi-structors.cpp
+++ b/clang/test/CodeGenCXX/microsoft-abi-structors.cpp
@@ -467,9 +467,9 @@ struct A {
 void *getA() {
   return (void*)new A();
 }
-// CHECK: define internal x86_thiscallcc i8* @"??_GA@?A@@UAEPAXI@Z"
+// CHECK: define internal x86_thiscallcc i8* @"??_GA@?A0x{{[^@]*}}@@UAEPAXI@Z"
 // CHECK:               (%"struct.(anonymous namespace)::A"* %this, i32 %should_call_delete)
-// CHECK: define internal x86_thiscallcc void @"??1A@?A@@UAE@XZ"
+// CHECK: define internal x86_thiscallcc void @"??1A@?A0x{{[^@]*}}@@UAE@XZ"
 // CHECK:               (%"struct.(anonymous namespace)::A"* %this)
 
 // Check that we correctly transform __stdcall to __thiscall for ctors and
diff --git a/clang/test/CodeGenCXX/microsoft-abi-throw.cpp b/clang/test/CodeGenCXX/microsoft-abi-throw.cpp
index cbbce2daaad..f55b94acf1d 100644
--- a/clang/test/CodeGenCXX/microsoft-abi-throw.cpp
+++ b/clang/test/CodeGenCXX/microsoft-abi-throw.cpp
@@ -22,7 +22,7 @@
 // CHECK-DAG: @_TI1P6AXXZ = linkonce_odr unnamed_addr constant %eh.ThrowInfo { i32 0, i8* null, i8* null, i8* bitcast (%eh.CatchableTypeArray.1* @_CTA1P6AXXZ to i8*) }, section ".xdata", comdat
 // CHECK-DAG: @_TIU2PAPFAH = linkonce_odr unnamed_addr constant %eh.ThrowInfo { i32 4, i8* null, i8* null, i8* bitcast (%eh.CatchableTypeArray.2* @_CTA2PAPFAH to i8*) }, section ".xdata", comdat
 // CHECK-DAG: @_CTA2PAPFAH = linkonce_odr unnamed_addr constant %eh.CatchableTypeArray.2 { i32 2, [2 x %eh.CatchableType*] [%eh.CatchableType* @"_CT??_R0PAPFAH@84", %eh.CatchableType* @"_CT??_R0PAX@84"] }, section ".xdata", comdat
-// CHECK-DAG: @"_TI1?AUFoo@?A@@" = internal unnamed_addr constant %eh.ThrowInfo { i32 0, i8* null, i8* null, i8* bitcast (%eh.CatchableTypeArray.1* @"_CTA1?AUFoo@?A@@" to i8*) }, section ".xdata"
+// CHECK-DAG: @"_TI1?AUFoo@?A0x{{[^@]*}}@@" = internal unnamed_addr constant %eh.ThrowInfo { i32 0, i8* null, i8* null, i8* bitcast (%eh.CatchableTypeArray.1* @"_CTA1?AUFoo@?A0x{{[^@]*}}@@" to i8*) }, section ".xdata"
 
 
 struct N { ~N(); };
@@ -135,6 +135,6 @@ namespace { struct Foo { } foo_exc; }
 
 void *GetExceptionInfo_test2() {
 // CHECK-LABEL: @"?GetExceptionInfo_test2@@YAPAXXZ"
-// CHECK:  ret i8* bitcast (%eh.ThrowInfo* @"_TI1?AUFoo@?A@@" to i8*)
+// CHECK:  ret i8* bitcast (%eh.ThrowInfo* @"_TI1?AUFoo@?A0x{{[^@]*}}@@" to i8*)
   return __GetExceptionInfo(foo_exc);
 }
diff --git a/clang/test/CodeGenCXX/microsoft-abi-thunks.cpp b/clang/test/CodeGenCXX/microsoft-abi-thunks.cpp
index c2f64f38417..2b0231ffe74 100644
--- a/clang/test/CodeGenCXX/microsoft-abi-thunks.cpp
+++ b/clang/test/CodeGenCXX/microsoft-abi-thunks.cpp
@@ -160,5 +160,5 @@ struct E : D {
 E::E() {}
 E e;
 // Class with internal linkage has internal linkage thunks.
-// CODEGEN: define internal x86_thiscallcc %struct.C* @"?goo@E@?A@@QAEPAUB@@XZ"
+// CODEGEN: define internal x86_thiscallcc %struct.C* @"?goo@E@?A0x{{[^@]*}}@@QAEPAUB@@XZ"
 }
diff --git a/clang/test/CodeGenCXX/microsoft-abi-vftables.cpp b/clang/test/CodeGenCXX/microsoft-abi-vftables.cpp
index 65370ab1ece..f8d26f14f91 100644
--- a/clang/test/CodeGenCXX/microsoft-abi-vftables.cpp
+++ b/clang/test/CodeGenCXX/microsoft-abi-vftables.cpp
@@ -36,10 +36,10 @@ struct W {
   virtual ~W() {}
 } w;
 }
-// RTTI-DAG: [[VTABLE_W:@.*]] = private unnamed_addr constant { [2 x i8*] } { [2 x i8*] [i8* bitcast ({{.*}} @"??_R4W@?A@@6B@" to i8*), i8* bitcast ({{.*}} @"??_GW@?A@@UAEPAXI@Z" to i8*)] }
-// RTTI-DAG: @"??_7W@?A@@6B@" = internal unnamed_addr alias i8*, getelementptr inbounds ({ [2 x i8*] }, { [2 x i8*] }* [[VTABLE_W]], i32 0, i32 0, i32 1)
+// RTTI-DAG: [[VTABLE_W:@.*]] = private unnamed_addr constant { [2 x i8*] } { [2 x i8*] [i8* bitcast ({{.*}} @"??_R4W@?A0x{{[^@]*}}@@6B@" to i8*), i8* bitcast ({{.*}} @"??_GW@?A0x{{[^@]*}}@@UAEPAXI@Z" to i8*)] }
+// RTTI-DAG: @"??_7W@?A0x{{[^@]*}}@@6B@" = internal unnamed_addr alias i8*, getelementptr inbounds ({ [2 x i8*] }, { [2 x i8*] }* [[VTABLE_W]], i32 0, i32 0, i32 1)
 
-// NO-RTTI-DAG: @"??_7W@?A@@6B@" = internal unnamed_addr constant { [1 x i8*] } { [1 x i8*] [i8* bitcast ({{.*}} @"??_GW@?A@@UAEPAXI@Z" to i8*)] }
+// NO-RTTI-DAG: @"??_7W@?A0x{{[^@]*}}@@6B@" = internal unnamed_addr constant { [1 x i8*] } { [1 x i8*] [i8* bitcast ({{.*}} @"??_GW@?A0x{{[^@]*}}@@UAEPAXI@Z" to i8*)] }
 
 struct X {};
 template <class> struct Y : virtual X {
diff --git a/clang/test/CodeGenCXX/microsoft-abi-virtual-member-pointers.cpp b/clang/test/CodeGenCXX/microsoft-abi-virtual-member-pointers.cpp
index ef8a5e48682..5ebe612e00a 100644
--- a/clang/test/CodeGenCXX/microsoft-abi-virtual-member-pointers.cpp
+++ b/clang/test/CodeGenCXX/microsoft-abi-virtual-member-pointers.cpp
@@ -57,14 +57,14 @@ void f() {
 // CHECK32: store i8* bitcast (void (%struct.C*, ...)* @"??_9C@@$BA@AE" to i8*), i8** %ptr
 // CHECK32: store i8* bitcast (void (%struct.C*, ...)* @"??_9C@@$B3AE" to i8*), i8** %ptr2
 // CHECK32: store i8* bitcast (void (%struct.C*, ...)* @"??_9C@@$B7AE" to i8*), i8** %ptr3
-// CHECK32: store i8* bitcast (void (%"struct.(anonymous namespace)::D"*, ...)* @"??_9D@?A@@$BA@AE" to i8*), i8** %ptr4
+// CHECK32: store i8* bitcast (void (%"struct.(anonymous namespace)::D"*, ...)* @"??_9D@?A0x{{[^@]*}}@@$BA@AE" to i8*), i8** %ptr4
 // CHECK32: }
 //
 // CHECK64-LABEL: define dso_local void @"?f@@YAXXZ"()
 // CHECK64: store i8* bitcast (void (%struct.C*, ...)* @"??_9C@@$BA@AA" to i8*), i8** %ptr
 // CHECK64: store i8* bitcast (void (%struct.C*, ...)* @"??_9C@@$B7AA" to i8*), i8** %ptr2
 // CHECK64: store i8* bitcast (void (%struct.C*, ...)* @"??_9C@@$BBA@AA" to i8*), i8** %ptr3
-// CHECK64: store i8* bitcast (void (%"struct.(anonymous namespace)::D"*, ...)* @"??_9D@?A@@$BA@AA" to i8*), i8** %ptr
+// CHECK64: store i8* bitcast (void (%"struct.(anonymous namespace)::D"*, ...)* @"??_9D@?A0x{{[^@]*}}@@$BA@AA" to i8*), i8** %ptr
 // CHECK64: }
 }
 
@@ -125,7 +125,7 @@ void f() {
 // CHECK64: }
 
 // Thunk for calling the virtual function in internal class D.
-// CHECK32-LABEL: define internal x86_thiscallcc void @"??_9D@?A@@$BA@AE"(%"struct.(anonymous namespace)::D"* %this, ...)
+// CHECK32-LABEL: define internal x86_thiscallcc void @"??_9D@?A0x{{[^@]*}}@@$BA@AE"(%"struct.(anonymous namespace)::D"* %this, ...)
 // CHECK32: #[[ATTR]]
 // CHECK32: [[VPTR:%.*]] = getelementptr inbounds void (%"struct.(anonymous namespace)::D"*, ...)*, void (%"struct.(anonymous namespace)::D"*, ...)** %{{.*}}, i64 0
 // CHECK32: [[CALLEE:%.*]] = load void (%"struct.(anonymous namespace)::D"*, ...)*, void (%"struct.(anonymous namespace)::D"*, ...)** [[VPTR]]
@@ -133,7 +133,7 @@ void f() {
 // CHECK32-NEXT: ret void
 // CHECK32: }
 //
-// CHECK64-LABEL: define internal void @"??_9D@?A@@$BA@AA"(%"struct.(anonymous namespace)::D"* %this, ...)
+// CHECK64-LABEL: define internal void @"??_9D@?A0x{{[^@]*}}@@$BA@AA"(%"struct.(anonymous namespace)::D"* %this, ...)
 // CHECK64: #[[ATTR]]
 // CHECK64: [[VPTR:%.*]] = getelementptr inbounds void (%"struct.(anonymous namespace)::D"*, ...)*, void (%"struct.(anonymous namespace)::D"*, ...)** %{{.*}}, i64 0
 // CHECK64: [[CALLEE:%.*]] = load void (%"struct.(anonymous namespace)::D"*, ...)*, void (%"struct.(anonymous namespace)::D"*, ...)** [[VPTR]]
diff --git a/clang/test/CodeGenCXX/msabi-swiftcall-cc.cpp b/clang/test/CodeGenCXX/msabi-swiftcall-cc.cpp
index d8205ed192a..3cc90a83fbd 100644
--- a/clang/test/CodeGenCXX/msabi-swiftcall-cc.cpp
+++ b/clang/test/CodeGenCXX/msabi-swiftcall-cc.cpp
@@ -12,8 +12,8 @@ void (__attribute__((__swiftcall__)) *p)();
 namespace {
 void __attribute__((__swiftcall__)) __attribute__((__used__)) f() { }
 }
-// CHECK-DAG: @"?f@?A@@YSXXZ"
-// CHECK-64-DAG: @"?f@?A@@YSXXZ"
+// CHECK-DAG: @"?f@?A0x{{[^@]*}}@@YSXXZ"
+// CHECK-64-DAG: @"?f@?A0x{{[^@]*}}@@YSXXZ"
 
 namespace n {
 void __attribute__((__swiftcall__)) f() {}
@@ -44,8 +44,8 @@ void (__attribute__((__preserve_most__)) *q)();
 namespace {
 void __attribute__((__preserve_most__)) __attribute__((__used__)) g() {}
 }
-// CHECK-DAG: @"?g@?A@@YUXXZ"
-// CHECK-64-DAG: @"?g@?A@@YUXXZ"
+// CHECK-DAG: @"?g@?A0x{{[^@]*}}@@YUXXZ"
+// CHECK-64-DAG: @"?g@?A0x{{[^@]*}}@@YUXXZ"
 
 namespace n {
 void __attribute__((__preserve_most__)) g() {}
diff --git a/clang/test/CodeGenCXX/pragma-init_seg.cpp b/clang/test/CodeGenCXX/pragma-init_seg.cpp
index 8b33b854fd2..67a8bac3682 100644
--- a/clang/test/CodeGenCXX/pragma-init_seg.cpp
+++ b/clang/test/CodeGenCXX/pragma-init_seg.cpp
@@ -28,8 +28,8 @@ int z = f();
 namespace internal_init {
 namespace {
 int x = f();
-// CHECK: @"?x@?A@internal_init@@3HA" = internal global i32 0, align 4
-// CHECK: @__cxx_init_fn_ptr.2 = private constant void ()* @"??__Ex@?A@internal_init@@YAXXZ", section ".asdf"
+// CHECK: @"?x@?A0x{{[^@]*}}@internal_init@@3HA" = internal global i32 0, align 4
+// CHECK: @__cxx_init_fn_ptr.2 = private constant void ()* @"??__Ex@?A0x{{[^@]*}}@internal_init@@YAXXZ", section ".asdf"
 }
 }
 
diff --git a/clang/test/CodeGenCXX/type-metadata.cpp b/clang/test/CodeGenCXX/type-metadata.cpp
index 8e3e4bd182f..a7a34673cdf 100644
--- a/clang/test/CodeGenCXX/type-metadata.cpp
+++ b/clang/test/CodeGenCXX/type-metadata.cpp
@@ -82,8 +82,8 @@
 // MS: comdat($"??_7B@@6B0@@"), !type [[B8:![0-9]+]]
 // MS: comdat($"??_7B@@6BA@@@"), !type [[A8]]
 // MS: comdat($"??_7C@@6B@"), !type [[A8]]
-// MS: comdat($"??_7D@?A@@6BB@@@"), !type [[B8]], !type [[D8:![0-9]+]]
-// MS: comdat($"??_7D@?A@@6BA@@@"), !type [[A8]]
+// MS: comdat($"??_7D@?A0x{{[^@]*}}@@6BB@@@"), !type [[B8]], !type [[D8:![0-9]+]]
+// MS: comdat($"??_7D@?A0x{{[^@]*}}@@6BA@@@"), !type [[A8]]
 // MS: comdat($"??_7FA@?1??foo@@YAXXZ@6B@"), !type [[A8]], !type [[FA8:![0-9]+]]
 
 struct A {
@@ -161,7 +161,7 @@ void af(A *a) {
 }
 
 // ITANIUM: define internal void @_Z3df1PN12_GLOBAL__N_11DE
-// MS: define internal void @"?df1@@YAXPEAUD@?A@@@Z"
+// MS: define internal void @"?df1@@YAXPEAUD@?A0x{{[^@]*}}@@@Z"
 void df1(D *d) {
   // TT-ITANIUM: {{%[^ ]*}} = call i1 @llvm.type.test(i8* {{%[^ ]*}}, metadata ![[DTYPE:[0-9]+]])
   // TT-MS: {{%[^ ]*}} = call i1 @llvm.type.test(i8* {{%[^ ]*}}, metadata !"?AUA@@")
@@ -171,7 +171,7 @@ void df1(D *d) {
 }
 
 // ITANIUM: define internal void @_Z3dg1PN12_GLOBAL__N_11DE
-// MS: define internal void @"?dg1@@YAXPEAUD@?A@@@Z"
+// MS: define internal void @"?dg1@@YAXPEAUD@?A0x{{[^@]*}}@@@Z"
 void dg1(D *d) {
   // TT-ITANIUM: {{%[^ ]*}} = call i1 @llvm.type.test(i8* {{%[^ ]*}}, metadata !"_ZTS1B")
   // TT-MS: {{%[^ ]*}} = call i1 @llvm.type.test(i8* {{%[^ ]*}}, metadata !"?AUB@@")
@@ -181,7 +181,7 @@ void dg1(D *d) {
 }
 
 // ITANIUM: define internal void @_Z3dh1PN12_GLOBAL__N_11DE
-// MS: define internal void @"?dh1@@YAXPEAUD@?A@@@Z"
+// MS: define internal void @"?dh1@@YAXPEAUD@?A0x{{[^@]*}}@@@Z"
 void dh1(D *d) {
   // TT-ITANIUM: {{%[^ ]*}} = call i1 @llvm.type.test(i8* {{%[^ ]*}}, metadata ![[DTYPE]])
   // TT-MS: {{%[^ ]*}} = call i1 @llvm.type.test(i8* {{%[^ ]*}}, metadata ![[DTYPE:[0-9]+]])
@@ -191,7 +191,7 @@ void dh1(D *d) {
 }
 
 // ITANIUM: define internal void @_Z3df2PN12_GLOBAL__N_11DE
-// MS: define internal void @"?df2@@YAXPEAUD@?A@@@Z"
+// MS: define internal void @"?df2@@YAXPEAUD@?A0x{{[^@]*}}@@@Z"
 __attribute__((no_sanitize("cfi")))
 void df2(D *d) {
   // CFI-NVT-NOT: call i1 @llvm.type.test
@@ -201,7 +201,7 @@ void df2(D *d) {
 }
 
 // ITANIUM: define internal void @_Z3df3PN12_GLOBAL__N_11DE
-// MS: define internal void @"?df3@@YAXPEAUD@?A@@@Z"
+// MS: define internal void @"?df3@@YAXPEAUD@?A0x{{[^@]*}}@@@Z"
 __attribute__((no_sanitize("address"))) __attribute__((no_sanitize("cfi-vcall")))
 void df3(D *d) {
   // CFI-NVT-NOT: call i1 @llvm.type.test